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GP-400 Grey Ceramic Microspheres are medium-fine, high-strength alumino-silicate ceramic microspheres engineered for applications requiring a balance of mechanical reinforcement, controlled particle size, and optimized rheology. GP-400 sits between ultra-fine reinforcing grades and coarse lightweight grades, making it a versatile choice for industrial coatings, construction materials, oil & gas systems, and composite formulations.
The spherical ceramic morphology provides uniform stress distribution, dimensional stability, and improved packing efficiency, while the grey color makes GP-400 suitable for non-decorative, performance-driven systems where aesthetics are secondary to durability and strength.
Ceramic Microspheres, Aluminosilicate Microspheres, Ceramic microballoons
93924-19-7
300-212-6
2621.90.0000
Not regulated as Dangerous Goods
Free-flowing powder
1.12-1.15
Ceramic microspheres are high-heat stable upto 1200–1400 °C
Improves packing efficiency and film build in epoxy/PU/acrylic industrial coatings, enabling higher solids with controlled viscosity and robust mechanical performance.
Enhances abrasion resistance and coating integrity in protective primers/topcoats, supporting tougher films and improved durability in harsh service environments.
Acts as a rigid ceramic microfiller in epoxy/PU floors and screeds to improve wear resistance, compressive strength, and long-term surface durability.
Provides micro-reinforcement and dimensional stability in repair systems, helping reduce cracking and improving mechanical strength under load.
Suitable for mechanically demanding cementing and strengthening formulations where particle integrity and stability are required under pressure and temperature.
Improves stiffness and dimensional stability in composite matrices, supporting better mechanical performance and processability versus irregular mineral fillers.
Improves thermal stability, erosion resistance, and surface integrity in refractory and foundry coatings exposed to high temperatures and molten metals.
Enhances wear resistance and surface hardness in mold and die coatings, helping reduce metal pick-up, surface damage, and maintenance frequency.
Acts as a rigid microfiller to improve mechanical strength, gap stability, and creep resistance in epoxy and PU-based structural bonding systems.
Improves load-bearing capacity and abrasion resistance in polymer-modified concrete, overlays, and industrial repair layers.
Used in underbody, chassis, and component coatings to enhance durability, stone-chip resistance, and long-term mechanical stability.
Incorporated into protective linings for chutes, hoppers, and material-handling equipment to improve resistance to abrasion and mechanical wear.
| Property | Typical Value |
|---|---|
| Chemical Composition | Alumino-Silicate Ceramic |
| Color | Grey |
| Particle Morphology | Spherical |
| Structure | Dense / High-Strength |
| True Density | ~2.4 g/cc |
| Particle Size (D95) | ~23 microns |
| Particle Size (D90) | ~18 microns |
| Particle Size (D50) | ~8 microns |
| Surface Area | ~5 m²/cc |
| Oil Absorption* | ~26 g / 100 g |
| Mohs Hardness | ~6 – 7 |
| Thermal Stability | > 1,000 °C |
| Form | Free-flowing powder |
Oil absorption measured as grams of oil per 100 grams of microspheres.
Coarse, spherical ceramic particles enable lightweight formulations while maintaining structural integrity, ideal for thick and high-volume systems.
Supports rapid thickness build in coatings, mortars, and flooring systems without excessive viscosity increase or sagging.
Rigid ceramic structure helps minimize shrinkage, cracking, and deformation in thick-section and load-bearing applications.
High-strength ceramic shells contribute to improved mechanical performance under static and dynamic loads.
Spherical morphology improves packing efficiency, reducing segregation and improving uniformity in coarse-filled systems.
Stable at elevated temperatures and resistant to acids, alkalis, and hydrocarbons, making it suitable for harsh industrial and oilfield environments.
Inorganic ceramic composition ensures fire safety and long-term stability without chemical interaction with binders.
Allows partial replacement of heavier mineral fillers and aggregates while achieving required strength and volume, improving overall formulation economics.
GP-400 Grey Ceramic Microspheres are inorganic, non-hazardous, and chemically inert under normal industrial handling conditions.
Non-flammable and non-reactive
Does not emit hazardous fumes
Dust generation should be minimized
Safety goggles
Gloves
Dust mask or respirator in dusty environments
Refer to the Safety Data Sheet (SDS) for detailed handling and occupational safety guidance.
25 kg HDPE-lined paper bags
Jumbo / bulk bags